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Round|Natural|GIA

1.20ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6565467161

Certificate GIA 6565467161

Diamond specifications and retailer prices

From £1,357 GBP
As of November 6, 2026
Save £2,416 GBP (64%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,774 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565467161. Listed at 20 retailers as of November 5, 2026, with prices from £1,357 to £3,774, a £2,416 spread on the same certified stone. NZ Jewellers lists it at £3,774. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6565467161
Dimensions6.78 × 6.83 × 4.18 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Crystal, Cloud, Cavity, Needle, Natural
Top View
6.78 mm6.83 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565467161
Side View
Table 60.0%Crown 34.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,774 GBP|Low: £1,357 GBP|High: £3,774 GBP|Avg: £2,050 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 14£1,357 GBP
Retailer 8£1,409 GBP
Retailer 12£1,582 GBP
Retailer 6£1,651 GBP
Retailer 7£1,696 GBP
Retailer 9£1,727 GBP
Retailer 4£1,805 GBP
Retailer 15£1,805 GBP
Retailer 3£1,889 GBP
Retailer 10£1,898 GBP
Retailer 5£2,083 GBP
Retailer 11£2,203 GBP
Retailer 2£2,250 GBP
Retailer 13£3,162 GBP
NZ Jewellers£3,774 GBP

24 data points across 15 retailers

20 retailers£1,357 GBP to £3,774 GBP

A
Cheapest Retailer
-
£1,357 GBP
A
Retailer 2
-
£1,409 GBP
View
A
Retailer 3
-
£1,582 GBP
View
B+
Retailer 4
-
£1,651 GBP
View
B+
Retailer 5
-
£1,694 GBP
View
B+
Retailer 6
-
£1,696 GBP
View
B+
Retailer 7
-
£1,701 GBP
View
B+
Retailer 8
-
£1,727 GBP
View
B+
Retailer 9
-
£1,805 GBP
View
Retailer 10
-
£1,805 GBP
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£1,860 GBP
View
B+
Retailer 12
-
£1,886 GBP
View
B+
Retailer 13
-
£1,889 GBP
View
B+
Retailer 14
-
£1,898 GBP
View
B+
Retailer 15
-
£1,910 GBP
View
B
Retailer 16
-
£2,083 GBP
View
B
Retailer 17
-
£2,203 GBP
View
B+
Retailer 18
-
£2,250 GBP
View
B
Retailer 19
-
£3,162 GBP
View
Most Expensive
B
NZ Jewellers
58ab7d78-f88a-4570-bb92-c69ea9dece91 · Nov 5
£3,774 GBP
$5,051 USD
View
19 more retailers have this diamond
Prices start from £1,357 GBPSave up to £2,416 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.20ct Round
£1,357 GBP